<template>
  <div class="progress-circle">
    <svg :width="radius"
         :height="radius"
         viewBox="0 0 100 100"
         version="1.1"
         xmlns="http://www.w3.org/2000/svg">
      <circle class="progress-background"
              r="50"
              cx="50"
              cy="50"
              fill="transparent" />
      <circle class="progress-bar"
              r="50"
              cx="50"
              cy="50"
              fill="transparent"
              :stroke-dasharray="dashArray"
              :stroke-dashoffset="dashOffset" />
    </svg>
    <slot></slot>
  </div>
</template>

<script>
export default {
  props: {
    radius: {
      type: Number,
      default: 100
    },
    percent: {
      type: Number,
      default: 0
    }
  },
  data() {
    return {
      dashArray: Math.PI * 100
    }
  },
  computed: {
    dashOffset() {
      return (1 - this.percent) * this.dashArray
    }
  }
}
</script>

<style scoped lang="stylus" rel="stylesheet/stylus">
@import '~common/stylus/variable';

.progress-circle {
  position: relative;

  circle {
    stroke-width: 8px;
    transform-origin: center;

    &.progress-background {
      transform: scale(0.9);
      stroke: $color-theme-d;
    }

    &.progress-bar {
      transform: scale(0.9) rotate(-90deg);
      stroke: $color-theme;
    }
  }
}
</style>
